Lightspawn, when summoned, is essentially a 5/5 minion with only a 4 mana cost, immediately making him one of the most meaty cards you can play on turn four.

However, the main strength of Lightspawn is also his weakness. When taking damage his attack power decreases along with his HP and he is extremely vulnurable to silence, which can result in Lightspawn losing all of his attack power, along with any buffs added to him. When silenced, Lightspawn becomes dead weight on the board at 0/5.

A common strategy for Lightspawn is to use him in conjunction with spells such as Power Word: Shield and Divine Spirit to increase Lightspawn's HP, which results in also increasing his attack power. Using two of each on him can result in one of the most dangerous creatures in the game as he will end up as a 36/36, able to one-shot the enemy hero. However, this is a very situational circumstance as you will need all of the cards in your hand at once to execute this strategy.

When using buff cards such as these on Lightspawn, it is usually best to use them only when you are ready to attack with him, as when he is powered up fully, the opponent may silence him which would result in you losing the Lightspawn completely along with all of the cards you invested into him. If you are certain that your opponent doesn't have a silence, you can also use Defender of Argus to make him even beefier and give him taunt, resulting in a sturdy and heavy attacking wall in front of your other minions.